Noob needs advice - NAS + Plex + Download Station

General Introductions
1

Hi All,

I am a windows user and venturing into the realm of the unknown - Linux.

I am looking to build a box that will serve as a Ubuntu Linux box where I can run Atomic Toolkit in a docker. This should give me plex, news group downloading and house all my movies, tv shows and photos.

To house all that data, I need to replace my aging Synology nas. Mine is 10 years old and is slow and outdated. I thought to use the same Linux box to do that and use Freenas. I am not sure that freenas is possible since it is a OS and not a program that runs on Linux. So looking for suggestions here as well.

Desires

  1. Create a 40+ TB array. Want 4 main disks and with 2 redundancies right now.
  2. Ability to stream loads of media in 4K to TVs in the house.
  3. Ability to transcode for sending movies to iPads and share with family.
  4. Low power and super quiet.

Any suggestions for the build (all comps).
Anyone know if FreeNas will work or do I need a different raid solution given I need to run Linux on this.

2

Didn’t know about AtomicToolkit.
I followed JDM_Waaat 's recommendations:
NAS [Guide] NAS Killer 4.0 - fast, quiet, power efficient, and flexible - starting at $125
Seperate PlexBOX [Guide] Hardware Transcoding: The JDM way! QuickSync and NVENC

I use unRAID on my NAS with all the dockers you need as a downloading box
What I love about unRAID is that not all my disks are written to at the same time when downloading or copying, etc